The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2011
Filed:
Mar. 16, 2009
Masayuki Sugiura, Yokohama, JP;
Masayuki Sugiura, Yokohama, JP;
Kabushiki Kaisha Toshiba, Toyko, JP;
Abstract
A semiconductor device, which is connected to a protected device and protects a protected device, includes a semiconductor layer provided on an insulating film; a plurality of source layers which is formed in the semiconductor layer and extends in a first direction; a plurality of drain layers which is formed in the semiconductor layer and extends along with the source layers; a plurality of body regions which is provided between the source layers and the drain layers in the semiconductor layer and extends in the first direction; and at least one body connecting part connecting the plurality of body regions, wherein a first width between the source layer and the drain layer at a first position is larger than a second width between the source layer and the drain layer at a second position, the second position is closer to the body connecting part than the first position.